[GTK3] Draw only background and frame of separator menuitems in GTK versions > 3.20

In GTK 3.20, gtk_menu_item_draw() just draws the root widget gadget, depending on the theme to style menu items with CSS name "separator" appropriately.

1 files changed, 3 insertions, 0 deletions

diff --git a/widget/gtk/gtk3drawing.cpp b/widget/gtk/gtk3drawing.cpp
index 3a5fa81f1a..6a0c08782c 100644
--- a/widget/gtk/gtk3drawing.cpp
+++ b/widget/gtk/gtk3drawing.cpp
@@ -1786,6 +1786,9 @@ moz_gtk_menu_separator_paint(cairo_t *cr, GdkRectangle* rect,
     moz_gtk_menu_item_paint(MOZ_GTK_MENUSEPARATOR, cr, rect,
                             &defaultState, direction);
 
+    if (gtk_get_minor_version() >= 20)
+        return MOZ_GTK_SUCCESS;
+
     GtkStyleContext* style;
     gboolean wide_separators;
     gint separator_height;